Polycom SoundStation IP 6000 Polycom HD Voice technology, for high-fidelity calls at up to 14 kHz, Patented Polycom clarity technologyMicrophone designed for small to midsize conference rooms, picks up voices up to 12 feet(3.5-metersAdvanced call handling, security, and provisioning features, High-resolution LED backlight displayResistance to interference from mobile phones and other wireless devices, Multi-language supportSupports optional expansion microphones, Integrated Power over Ethernet, for easy installation.